CN102966842A - Gas cylinder for vehicles with surface coatings and preparation method thereof - Google Patents
Gas cylinder for vehicles with surface coatings and preparation method thereof Download PDFInfo
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- CN102966842A CN102966842A CN2012104807608A CN201210480760A CN102966842A CN 102966842 A CN102966842 A CN 102966842A CN 2012104807608 A CN2012104807608 A CN 2012104807608A CN 201210480760 A CN201210480760 A CN 201210480760A CN 102966842 A CN102966842 A CN 102966842A
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Abstract
The invention discloses a gas cylinder for vehicles with surface coatings. The gas cylinder comprises a gas cylinder body, and is characterized in that the external surface of the gas cylinder body is provided with a coating, the coating is a double-layer coating, a bottom layer of the double-layer coating is an anticorrosion coating, and an outer layer of the double-layer coating is a weather-proof coating. The preparation method comprises the following steps of: firstly cleaning the surface of the gas cylinder, secondly spraying the bottom anticorrosion coating layer, then spraying the outer weather-proof coating layer, and finally cooling. The gas cylinder provided by the invention has the advantages that the anti-corrosive property and the weather-proof property are good, the coating can effectively protect the external surface of the gas cylinder for the vehicles, and also enables the gas cylinder to look attractive.
Description
Technical field
The present invention relates to a kind of vehicle gas cylinder, be specifically related to a kind of vehicle gas cylinder and spraying method of belt surface coating.
Background technique
Compressed natural gas for automobile bottle (be called for short CNG gas cylinder) is a kind of Novel gas bottle of developing for adapting to the CNG development of automobile in recent years, because that it has volume by weight is smaller, is used widely in the CNG industry.
A large amount of widely used compressed natural gas for automobile gas cylinders (CNG gas cylinder) mainly are divided into following several on the Domestic market: 1. CNG I type bottle, be commonly called as steel cylinder, directly use the production of hotrolling seamless pipe steel, thickness of steel pipe thicker (at least more than the 6mm), weight ratio is heavier; 2. CNG II type bottle is commonly called as steel inner container glass fibre hoop and twines bottle, and gas cylinder weight is obviously light than steel cylinder, and safety coefficient is higher, and price variance is little; 3. CNG III type bottle, the full winding gas cylinder of metal inner tube fiber uses steel or aluminum liner, the full composites gas cylinder that twines of resin-dipping long fibre; 4. CNG IV type bottle, the full winding gas cylinder of plastic inner container fiber, plastic inner lining add the composites gas cylinder of " the whole winding " resin-dipping materials reinforced with long fibers.CNG III type and CNG IV type bottle are lightweight, but expensive, and usage quantity is few.
Because the natural gas used for automobile steel cylinder adopts seamless steel pipe as raw material, steel is exposed to meeting corrosion in the air, and the ability that makes steel cylinder can bear power reduces, thereby the Security in the increase using process reduces the working life of steel cylinder.According to pressurized container Application standard regulation, the Acceptable life of steel cylinder is 15 years, namely be to say that this steel cylinder will can not be corroded at 15 years inner bottles at least, so just require the protective coating decay resistance of steel cylinder outer surface strong, with the strong adhesion of matrix.
Summary of the invention
The object of the invention provides a kind of vehicle gas cylinder and spraying method of belt surface coating, so that the gas cylinder external surface coating has preferably anti-corrosive properties, weathering resistance and stronger adhesion, to the protection of gas cylinder outer surface better, and comparatively attractive in appearance.
Technological scheme of the present invention is: a kind of vehicle gas cylinder of belt surface coating, comprise a gas cylinder body, described this external surface of gas cylinder is provided with coating, and described coating is duplex coating, the bottom of described duplex coating is corrosion-inhibiting coating, and the skin of described duplex coating is weathering resistance coatings.
Further technological scheme, the thickness of described duplex coating is 120-200um.
Further technological scheme, described corrosion-inhibiting coating is made of epoxy resin layer.
Further technological scheme, described weathering resistance coatings is made of carboxylic acid resin and triglycidyl isocyanurate layer.
The present invention has also disclosed a kind of preparation method of vehicle gas cylinder of belt surface coating, comprises the steps:
Step 1, the gas cylinder surface cleaning adopts the ball blast mode to remove gas cylinder surface foul, uses pressurized air through deoiling, dewatering to purge to remove gas cylinder surface floating dust, require the steel cylinder surface cleanliness to reach Sa2.5 afterwards;
Step 2, the spraying step of the corrosion-inhibiting coating of bottom,
S21, gas cylinder is hung on the paint line suspension arrangement, is introduced into the dust removal apparatus dedusting,
S22, then enter powder spraying chamber and carry out electrostatic spraying, the suspension arrangement at gas cylinder place enters a rotating machinery and makes described gas cylinder begin at the uniform velocity rotation in the spraying process, spray gun moves up and down the gas cylinder surface that begins simultaneously evenly to dust in rotation, forms the uniform powder bed of one deck
Gas cylinder after S23, spraying are finished enters in the High Temperature Furnaces with the painting object streamline and is cured;
Step 4, cooling step, gas cylinder out enters cooling unit with the painting object streamline afterwards in High Temperature Furnaces, and cooling unit adopts water-cooling pattern, and when gas cylinder passed through cooling unit, this cooling unit was to gas cylinder surface sprinkling water smoke.
In the described step 2, its process conditions are: spraying air pressure 4.5m
3/ h, spray voltage 80KV, the time 50s that dusts, 240 ℃ of solidifying temperatures, curing time 80s.
In the described step 3, its process conditions are: spraying air pressure 4.5m
3/ h, spray voltage 80KV, the time 40s that dusts, 280 ℃ of solidifying temperatures, curing time 180s.
Advantage of the present invention is: the present invention is by spraying duplex coating at the vehicle gas cylinder outer surface, and this coating has preferably anti-corrosive properties, weathering resistance, thereby can protect preferably the gas cylinder outer surface, has prolonged the working life of gas cylinder; And its outward appearance is also comparatively attractive in appearance.
Description of drawings
Fig. 1: the sectional view of vehicle gas cylinder of the present invention.
Embodiment
A kind of vehicle gas cylinder of belt surface coating, comprise a gas cylinder body 1, described this external surface of gas cylinder is provided with coating, described coating is duplex coating, the bottom of described duplex coating is corrosion-inhibiting coating 2, the skin of described duplex coating is weathering resistance coatings 3, and described corrosion-inhibiting coating is made of epoxy resin layer, and described weathering resistance coatings is made of carboxylic acid resin and triglycidyl isocyanurate layer.
The preparation method of the vehicle gas cylinder of above-mentioned belt surface coating, its step is as follows:
Step 1, the gas cylinder cleaning surfaces adopts the ball blast mode to remove the fouls such as the scale on gas cylinder surface, corrosion, uses pressurized air through deoiling, dewatering to purge to remove gas cylinder surface floating dust, require the steel cylinder surface cleanliness to reach Sa2.5 afterwards;
Step 2 is carried out first the spraying of primer coating, and gas cylinder is hung on the paint line suspension arrangement, is introduced into the dust removal apparatus dedusting; Then enter powder spraying chamber and carry out electrostatic spraying, the suspension arrangement at gas cylinder place enters a rotating machinery in the spraying process, make described gas cylinder begin at the uniform velocity rotation, spray gun moves up and down the gas cylinder surface that begins simultaneously evenly to dust in rotation, form the uniform powder bed of one deck, gas cylinder entered in the High Temperature Furnaces with the painting object streamline and is cured after spraying was finished, and the corrosion-inhibiting coating of bottom was finished after curing was finished.
Step 4, gas cylinder out enters cooling unit with the painting object streamline afterwards in High Temperature Furnaces, and cooling unit adopts water-cooling pattern, gas cylinder is when the cooling unit, and this cooling unit is to gas cylinder surface sprinkling water smoke, and making will under the temperature on gas cylinder surface, reduce the supply delay time, raise the efficiency.
The parameter of spraying process is as follows:
| Process parameter | Bottom | Surface layer |
| Air pressure m 3/h | 4.5 | 4.5 |
| Voltage KV | 80 | 80 |
| The amount of dusting | 60 | 60 |
| Spray gun is stroke cm up and down | From each 10cm of workpiece end socket sealing | From each 10cm of workpiece end socket sealing |
| Spray gun and steel cylinder distance c m | 20-25 | 20-25 |
| Time s dusts | 50 | 40 |
| Solidifying temperature ℃ | 240 | 280 |
| Solidify stepping time s | 80 | 180 |
In the inventive embodiments, the coating of vehicle gas cylinder outer surface is bi-layer coating structure, adopts the double layer of powder spray painting to form, and it is that main raw material(s) is prepared from that bottom adopts epoxy resin layer, thereby have excellent chemical-resistance and a mechanical property, particularly antiseptic property; The powder thermosetting coating that the outer carboxylic acid resin of employing and triglycidyl isocyanurate (TGIC) are produced satisfies for being exposed to the ultraviolet ray in rainwater, snow mist, the sunlight and containing the situation such as sulfur dioxide to descend to use, so have excellent weather-resistant property.
Through behind the condensation water test (EN ISO 6270-2) of this coating of dependence test by 240h, coating is without foaming, the parent metal non-corroding, and 2mm cross cut test (ISO 2409) adhesion meets the demands.Simultaneously, this coating can be by the test of 120 Different climates with different corrosivity stress combinations, and the cycle of single test constitutes: the salt spray test of 4h (DIN 50021-SS); Under the standard climate condition of DIN 50014-23/50-2, deposit 4h; The damp and hot 16h(weather of depositing is by DIN 50017-KK(40 ± 3) ℃, atmospheric moisture 100%).
Adopt static thermal spraying and gun system accurate adjustment powder outlet quantity, air pressure, voltage, dust the key parameter such as time so that the coating of spraying is all reaching very high requirement aspect thickness and the uniformity, adopt simultaneously and make rational solidifying temperature and curing time the complete adhesion of curing of coatings, corrosion resistance and weatherability reach and relate to requirement.
Above-mentioned coating has the performance of every excellence, it is applied to gas cylinder and can be good at preventing the gas cylinder external corrosion, the phenomenon that under the condition that fills for a long time, can not occur coating cracking simultaneously, because itself and the good adhesion of metal, the phenomenon that coating shedding also can not occur, thereby can be applied in every field.
Above-described embodiment only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the people who is familiar with technique can understand content of the present invention and according to this enforcement, can not limit protection scope of the present invention with this.All modifications that the Spirit Essence of main technical schemes is done according to the present invention all should be encompassed within protection scope of the present invention.
Claims (7)
1. the vehicle gas cylinder of a belt surface coating comprises a gas cylinder body, it is characterized in that: described this external surface of gas cylinder is provided with coating, and described coating is duplex coating, and the bottom of described duplex coating is corrosion-inhibiting coating, and the skin of described duplex coating is weathering resistance coatings.
2. the vehicle gas cylinder of belt surface coating according to claim 1, it is characterized in that: the thickness of described duplex coating is 120-200um.
3. the vehicle gas cylinder of belt surface coating according to claim 1, it is characterized in that: described corrosion-inhibiting coating is made of epoxy resin layer.
4. the vehicle gas cylinder of belt surface coating according to claim 1, it is characterized in that: described weathering resistance coatings is made of carboxylic acid resin and triglycidyl isocyanurate layer.
5. the preparation method of the vehicle gas cylinder of a belt surface coating is characterized in that, comprises the steps:
Step 1, the gas cylinder surface cleaning adopts the ball blast mode to remove gas cylinder surface foul, uses pressurized air through deoiling, dewatering to purge to remove gas cylinder surface floating dust, require the steel cylinder surface cleanliness to reach Sa2.5 afterwards;
Step 2, the spraying step of the corrosion-inhibiting coating of bottom,
S21, gas cylinder is hung on the paint line suspension arrangement, is introduced into the dust removal apparatus dedusting,
S22, then enter powder spraying chamber and carry out electrostatic spraying, the suspension arrangement at gas cylinder place enters a rotating machinery and makes described gas cylinder begin at the uniform velocity rotation in the spraying process, spray gun moves up and down the gas cylinder surface that begins simultaneously evenly to dust in rotation, forms the uniform powder bed of one deck
Gas cylinder after S23, spraying are finished enters in the High Temperature Furnaces with the painting object streamline and is cured;
Step 3, the spraying step of outer field weathering resistance coatings, the same spraying method of employing and step 2 carries out the spraying of outer field weathering resistance coatings, has formed duplex coating through step 2 and step 3 on the gas cylinder surface;
Step 4, cooling step, gas cylinder out enters cooling unit with the painting object streamline afterwards in High Temperature Furnaces, and cooling unit adopts water-cooling pattern, and when gas cylinder passed through cooling unit, this cooling unit was to gas cylinder surface sprinkling water smoke.
6. the preparation method of the vehicle gas cylinder of belt surface coating according to claim 5, it is characterized in that: in the described step 2, its process conditions are: spraying air pressure 4.5m
3/ h, spray voltage 80KV, the time 50s that dusts, 240 ℃ of solidifying temperatures, curing time 80s.
7. the preparation method of the vehicle gas cylinder of belt surface coating according to claim 5, it is characterized in that: in the described step 3, its process conditions are: spraying air pressure 4.5m
3/ h, spray voltage 80KV, the time 40s that dusts, 280 ℃ of solidifying temperatures, curing time 180s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210480760.8A CN102966842B (en) | 2012-11-23 | 2012-11-23 | Gas cylinder for vehicles with surface coatings and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210480760.8A CN102966842B (en) | 2012-11-23 | 2012-11-23 | Gas cylinder for vehicles with surface coatings and preparation method thereof |
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| Publication Number | Publication Date |
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| CN102966842A true CN102966842A (en) | 2013-03-13 |
| CN102966842B CN102966842B (en) | 2015-03-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104190602A (en) * | 2014-08-29 | 2014-12-10 | 杭州余杭獐山钢瓶有限公司 | Technology for vacuum magnetic field collaborative electrostatic spraying of internal surface of steel cylinder |
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| RU2230977C2 (en) * | 2002-08-20 | 2004-06-20 | Федеральное Государственное унитарное предприятие "Государственное научно-производственное предприятие "Сплав" | Steel seamless bottle with protective coat for compressed gases |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104190602A (en) * | 2014-08-29 | 2014-12-10 | 杭州余杭獐山钢瓶有限公司 | Technology for vacuum magnetic field collaborative electrostatic spraying of internal surface of steel cylinder |
| CN104190602B (en) * | 2014-08-29 | 2015-12-02 | 杭州余杭獐山钢瓶有限公司 | A kind of steel cylinder inner surface vacuum magnetic field works in coordination with the technique of electrostatic spraying |
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| CN102966842B (en) | 2015-03-25 |
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Effective date of registration: 20170410 Address after: 18 Chengdu Province Industrial Park, Xinjin Province, the new material industry functional area of new materials, road, the road, 611430 Patentee after: SINOMA TECHNOLOGY (CHENGDU) CO., LTD. Address before: 215021 Changyang street, Suzhou Industrial Park, Jiangsu, China, No. 68, No. Patentee before: Sinoma Science & Technology (Suzhou) Co., Ltd. |